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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tv.common.util;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import com.android.tv.common.BuildConfig;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
/** A utility class to get the current location. */
public class LocationUtils {
private static final String TAG = "LocationUtils";
private static final boolean DEBUG = false;
private static final Set<OnUpdateAddressListener> sOnUpdateAddressListeners =
Collections.synchronizedSet(new HashSet<>());
private static Context sApplicationContext;
private static Address sAddress;
private static String sCountry;
private static IOException sError;
/** Checks the current location. */
public static synchronized Address getCurrentAddress(Context context)
throws IOException, SecurityException {
if (sAddress != null) {
return sAddress;
}
if (sError != null) {
throw sError;
}
if (sApplicationContext == null) {
sApplicationContext = context.getApplicationContext();
}
/* Begin_AOSP_Comment_Out
if (!BuildConfig.AOSP) {
com.google.android.tv.livechannels.util.GoogleLocationUtilsHelper.startLocationUpdates(
context, LocationUtils::updateAddress);
return null;
}
End_AOSP_Comment_Out */
LocationUtilsHelper.startLocationUpdates();
return null;
}
@Nullable
static String getCurrentPostalCode(Context context) throws IOException {
Address address = getCurrentAddress(context);
if (address != null) {
Log.i(
TAG,
"Current country and postal code is "
+ address.getCountryName()
+ ", "
+ address.getPostalCode());
return address.getPostalCode();
}
return null;
}
/** The listener used when address is updated. */
public interface OnUpdateAddressListener {
/**
* Called when address is updated.
*
* <p>This listener is removed when this method returns true.
*
* @return {@code true} if the job has been finished and the listener needs to be removed;
* {@code false} otherwise.
*/
boolean onUpdateAddress(Address address);
}
/**
* Add an {@link OnUpdateAddressListener} instance.
*
* <p>Note that the listener is removed automatically when {@link
* OnUpdateAddressListener#onUpdateAddress(Address)} is called and returns {@code true}.
*/
public static void addOnUpdateAddressListener(OnUpdateAddressListener listener) {
sOnUpdateAddressListeners.add(listener);
}
/**
* Remove an {@link OnUpdateAddressListener} instance if it exists.
*
* <p>Note that the listener will be removed automatically when {@link
* OnUpdateAddressListener#onUpdateAddress(Address)} is called and returns {@code true}.
*/
public static void removeOnUpdateAddressListener(OnUpdateAddressListener listener) {
sOnUpdateAddressListeners.remove(listener);
}
/** Returns the current country. */
@NonNull
public static synchronized String getCurrentCountry(Context context) {
if (sCountry != null) {
return sCountry;
}
/* Begin_AOSP_Comment_Out
if (!BuildConfig.AOSP) {
sCountry =
com.google.android.tv.livechannels.util.GoogleLocationUtilsHelper
.getDeviceCountry(context);
}
End_AOSP_Comment_Out */
if (TextUtils.isEmpty(sCountry)) {
sCountry = context.getResources().getConfiguration().locale.getCountry();
}
return sCountry;
}
private static void updateAddress(Location location) {
if (DEBUG) Log.d(TAG, "Updating address with " + location);
if (location == null) {
return;
}
Geocoder geocoder = new Geocoder(sApplicationContext, Locale.getDefault());
try {
List<Address> addresses =
geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
if (addresses != null && !addresses.isEmpty()) {
sAddress = addresses.get(0);
if (DEBUG) Log.d(TAG, "Got " + sAddress);
try {
PostalCodeUtils.updatePostalCode(sApplicationContext);
} catch (Exception e) {
// Do nothing
}
Set<OnUpdateAddressListener> listenersToRemove = new HashSet<>();
synchronized (sOnUpdateAddressListeners) {
for (OnUpdateAddressListener listener : sOnUpdateAddressListeners) {
if (listener.onUpdateAddress(sAddress)) {
listenersToRemove.add(listener);
}
}
for (OnUpdateAddressListener listener : listenersToRemove) {
removeOnUpdateAddressListener(listener);
}
}
} else {
if (DEBUG) Log.d(TAG, "No address returned");
}
sError = null;
} catch (IOException e) {
Log.w(TAG, "Error in updating address", e);
sError = e;
}
}
private LocationUtils() {}
private static class LocationUtilsHelper {
private static final LocationListener LOCATION_LISTENER =
new LocationListener() {
@Override
public void onLocationChanged(Location location) {
updateAddress(location);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
@Override
public void onProviderEnabled(String provider) {}
@Override
public void onProviderDisabled(String provider) {}
};
private static LocationManager sLocationManager;
public static void startLocationUpdates() {
if (sLocationManager == null) {
sLocationManager =
(LocationManager)
sApplicationContext.getSystemService(Context.LOCATION_SERVICE);
try {
sLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 1000, 10, LOCATION_LISTENER, null);
} catch (SecurityException e) {
// Enables requesting the location updates again.
sLocationManager = null;
throw e;
}
}
}
}
}
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